Principles of Operation: Notes

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The Remote Function Actuator (RFA) module is a multifunction electronic module that controls many of the vehicle systems. The RFA module communicates on both the Medium Speed Controller Area Network (MS-CAN) and the High Speed Controller Area Network (HS-CAN). Most of the RFA module functions utilize hardwired inputs and/or outputs. The RFA module controls the following hardwired functions:

Anti-theft perimeter alarm
Intelligent Access (IA)
Keyless entry keypad
Luggage compartment lid release
Passive Anti-Theft System (PATS)
Power door locks
Remote Keyless Entry (RKE) system
RKE transmitter (part of the IA key)

In addition, the RFA module is involved in other vehicle systems through communication over the MS-CAN and the HS-CAN.

Some RFA module parameters are programmable. The factory set 5-digit permanent entry code from the SJB must be configured into a new RFA module after installation. Two types of programmable parameters are available: module configuration and programmable parameters. Refer to MODULE CONFIGURATION SYSTEM article.